Geyser - Cyclic hot water fountain

  Geyser  Cyclic hot water fountain  Natural geysers form when underground chambers fill with water and are heated geothermally. When the water is heated to its boiling point, the geyser erupts, spewing its contents, and the cycle starts again.  ...

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Gas Model - Caged molecules do their thing.

  Gas Model  Caged molecules do their thing.   The atomic theory of matter tells us that a gas is made up of tiny particles called atoms (or molecules, which are combinations of atoms), which are constantly in motion, smashing into each...

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Fog Chamber - Make a portable cloud in a bottle. Now you see it; now you don't!

    Fog Chamber  Make a portable cloud in a bottle. Now you see it; now you don't!  Clouds form when invisible water vapor in the air is cooled enough to form tiny droplets of liquid water. In the atmosphere, this usually happens when...

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Far Out Corners - Your experience of the world influences what you see.

Far Out Corners  Your experience of the world influences what you see.   When they first glance at this exhibit, many people say, "What's the big deal? It's just a bunch of boxes." But there are no boxes at all. A closer look reveals that the...

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Falling Feather - Prove to yourself that Galileo was right!

Falling Feather  Prove to yourself that Galileo was right!   In a famous demonstration, Galileo supposedly dropped a heavy weight and a light weight from the top of the Leaning Tower of Pisa to show that both weights fall at the same acceleration....

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Fading Dot - Now you see it; now you don't. An object without a sharp edge can fade from your view

Fading Dot  Now you see it; now you don't. An object without a sharp edge can fade from your view.   A fuzzy, colored dot that has no distinct edges seems to disappear. As you stare at the dot, its color appears to blend with the colors...

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